net.evendanan.android.thumbremote.network.ReusableHttpClientBlocking.java Source code

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Here is the source code for net.evendanan.android.thumbremote.network.ReusableHttpClientBlocking.java

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/* The following code was written by Menny Even Danan
 * and is released under the APACHE 2.0 license
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 */
package net.evendanan.android.thumbremote.network;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URI;
import java.net.URISyntaxException;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.CoreConnectionPNames;

import android.text.TextUtils;
import android.util.Log;

/**
 * Wraps Android's HttpClient/HttpGet objects
 */
class ReusableHttpClientBlocking implements HttpBlocking {
    private static final String TAG = "ReusableHttpClientBlocking";

    private final DefaultHttpClient mHttpClient;
    private final HttpGet mRequest;

    ReusableHttpClientBlocking(int timeout, String user, String password) {
        Log.d(TAG, "Creating a new HTTP client");
        mHttpClient = new DefaultHttpClient();
        if (!TextUtils.isEmpty(password)) {
            CredentialsProvider credProvider = new BasicCredentialsProvider();
            credProvider.setCredentials(new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT),
                    new UsernamePasswordCredentials(user, password));
            mHttpClient.setCredentialsProvider(credProvider);
        }
        mRequest = new HttpGet();
        mRequest.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, new Integer(timeout));
        mRequest.getParams().setParameter(CoreConnectionPNames.SO_LINGER, new Integer(timeout / 2));
        mRequest.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, new Integer(timeout));
    }

    /**
     * Perform the blocking fetch.
     * @throws IOException 
     * @throws URISyntaxException 
     */
    public synchronized Response fetch(String url) throws IOException, URISyntaxException {
        if (url == null)
            return new Response(false, 404, null);

        URI uri = new URI(url);
        mRequest.setURI(uri);
        Log.d(TAG, "Fetching " + url);

        HttpResponse httpResponse = mHttpClient.execute(mRequest);
        int responseCode = httpResponse.getStatusLine().getStatusCode();
        String response = "";
        HttpEntity entity = httpResponse.getEntity();

        if (entity != null) {

            InputStream instream = entity.getContent();
            response = convertStreamToString(instream);
        }

        boolean success = responseCode >= 200 && responseCode < 300;
        if (!success) {
            Log.w(TAG, "Got error response code " + responseCode);
            return new Response(false, responseCode, httpResponse.getStatusLine().getReasonPhrase());
        }

        return new Response(true, responseCode, response);
    }

    @Override
    public synchronized void close() {
        mHttpClient.getConnectionManager().shutdown();
    }

    private static String convertStreamToString(InputStream is) {

        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();

        String NL = System.getProperty("line.separator");
        String line = null;
        try {
            while ((line = reader.readLine()) != null) {
                sb.append(line);
                sb.append(NL);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return sb.toString();
    }
}